Vaporizer for internal-combustion engines.



No. 680,I|5. Patented Aug. 6, I91.

C. H. BLOMSTROM.

VAPOBIZEB FOR INTERNAL COMBUSTION ENGINES.

(Application filed In. 23, 1901.\ (No ladel.) 2 Sheets-Sheet l.

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No. 680,ll5.

Patented Aug. 6, I90l. 0. H. BLOMSTROIL VAPOBIZER FOB INTERNALCOMBUSTION ENGINES.

(Application filed Mar. 23. 1901.)

(No Model.) 2 Sheets-Shoat 2.

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UNITED STATES PATENT OFFICE.

CARL I'I. BLOMSTROM, OF-MARQUETTE, MICHIGAN, ASSIGNOR TO LAKE SHOREENGINE WORKS, OF SAME PLACE.

VAPORIZER FOR INTERNAL-COMBUSTION ENGINES.

SPECIFICATION forming part of Letters Patent No. 680,115, dated August6, 1901. Original application filed November 8,1898, Serial No. 695,912.Divided and this application filed March 23, 1901. Serial To aZZ whom itmay concern.-

Be it known that I, CARL H. BLoMs'rRoM, a citizen of the United States,residing at Marquette, county of Marquette, State of Michigan, haveinvented certain new and useful Improvements in Vaporizers for Internal-Combustion Engines, of which the following is a full, clear, and exactdescription.

The subject-matter of this invention was originally disclosed in anapplication filedby me on November 8, 1898, Serial No. 695,912, and ofwhich the present application is a di- VlSlOIl.

The object of the invention is to provide an automatically-operatingvaporizing device of simple and efficient construction whereby theliquid fuel may be vaporized and thoroughly mixed with the ingoingcharge of air by the suction produced by the piston on the engine.

The invention consists in the features set forth in the followingdescription, disclosed in the accompanyingdrawings, and particm larlypointed out in the appended claims.

In the drawings, Figure l is a View in vertical elevation of an engineprovided with' my improved vaporizer. Fig. 2 is a view in elevation ofthe vaporizer detached, parts being shown in section. Fig. 3 is a viewin vertical section taken on the line 3 3 of Fig. 2. 4: is an end viewin elevation of the vaporizer. r

The vaporizer is shown as applied to a form of two-cycle uprightexplosive-engine, such as is commonly used for marine pur-' poses. Inthis form of engine the charge is first drawn into the crank-chamber bythe suction of the piston and then forced into the cylinder. It will,however, be understood that the vaporizer may be applied to any form ofinternal-combustion engine in which the charge is drawn in by thesuction of the piston. v

The engine is mounted upon a suitable base-plate 10, upon which iscarried the inclosed crank-casing 11 and the upright cylinder 12. Thecylinder 12 is provided with a suitable inclined exhaust-passage 13, tothe lower end and at one side of which is mount- (No model.)

ed an inlet-passage 14., leading to the vaporizer, as indicated inFig. 1. This passage 14 is preferably cast in piece with theexhaust-pipe 13', so that the charge of air may be readily heated on itsway to the vaporizer by conduction. The vaporizer is mounted upon asuitable plate 15, cast in piece there with, by which it is bolted tothe crank-cas= ing. The vaporizer consists of a passage formed by twoelbow-sections 16 and 17, cast in piece with the plate 15, arranged inplanes at right angles to each other and connected at their lower ends.The elbow-section 16 is downwardly extending and communicates at itsouter end with the air-heating pipe 14. The elbow-section 17 is upwardlyextending and opens at its upper end into the crankcasing, where it isprovided with an automatically-operating suction-valve 18, having aconical seat. Tangentially arranged at the lower end of theelbow-section 16 is a downwardly-extendingliquid-fuel inlet or nozzle19. Beneath the-oil-inlet 19 is located a downwardly-movable auxiliarysuction-valve 20, provided at its upper end with a conical portion 21,normally seated within the oil-inlet, whereby the latter is controlled.The valve 20 is also provided immediately below the conical portion 21with a disk 22. This disk is provided with a cylindrical face and fittedwithin a cylindrical seat formed at the lower end of elbow-section 16,so as to freely slide therein to permit the conical portion 21 to snuglyfit within its seat at the oil-inlet, but so, also, as to entirelyobstruct the charge-inlet passage. The stem of valve 20 extends througha suitable guide 23, threaded into the body of the "vaporizer, andexteriorly projects to a slight extent. A coiled spring 24 serves tohold the auxiliary valve 20 to its seat.

I As will be readily understood, when a vacuum is developed within thecrank-chamber of the engine (or if the vaporizer is applied to afour-cycle engine within the cylinder) the main valve 18 and theauxiliary Valve 20 will be operated, a supply of oil will iinpingeagainst and fiow over the disk 22, and a charge of air will be drawnthrough the heating-pipe 14 and the downwardly-extend-.

ing elbow-section 16 and will impinge against the disk 22, readilybreaking up and vaporizin g the oil which has flowed over such disk andcarrying it along through the upwardlyextending elbow-section 17 intothe crank chamber or cylinder of the engine. 1 con- .sider thearrangement of the downwardlyextending elbow-passage 16, thetangentiallyarranged oil-inlet, and the do wnwardly-opening valve 20,provided with the conical portion 21 and the disk 22, of especialadvantage, not only because by this means the oil-inlet valve isconveniently operated by the ingoing charge of air, but because the disk22 serves as anabutment against which the oil may strike and also overwhich the oil may flow and be readily picked up bythe downwardly--projected charge of air impinged against and passing over such disk.

In order to conveniently regulate the suction developed within thevaporizer, means are provided for regulating the throw or extent ofopening of the main suction-valve 18. The stem of this valve passesthrough a suitable guiding-sleeve 25, cast in the body of the vaporizer,which is recessed to form an annular chamber about the valve-stem. Theouter end of the valve-stem is guided within this chamber by means of aflanged guide and stop-nut 26, which is adjustably threaded upon thevalve-stem and held in place by a lock-nut 27. The valve 18 is held toits seat by a coiled spring 28-, which is contained within the chamberof guide-sleeve 25 and which bears against the guide-nut 26. Upon theend of the guide-sleeve 25 is mounted a rotatably-adjustable nut 29,provided with an inwardly-turned flange for engaging the flange ofstop-nut 26.

The nut 29 is also provided with a suitable handle 30 and with pin 32,fastened into the guide-sleeve 25. By adjusting manually orautomatically the of opening of the valve 18 may be convenientlyregulated, and thereby regulating the amount of suction within thevaporizer. The throw of the auxiliary valve 20' is also regulated bymeans'of a sliding piece 33, provided with diagonal slots 34, withinwhich slots project pins 35, secured to the body of the vaporizer. Thepiece 33 is located directly beneath the stem of valve 20; and as it isshifted moves nearer to or farther away from the end of the valve stemand so afthe throw or extent of opening of this valve. Means areprovided for shifting the piece 33, consisting of a lever 36, pivotedintermediate its ends to a forked lug 37 on the engineframe. The lever36 may be manually or automatically shifted, as desired.

Immediately above an oil inlet or nozzle 19 is provided a verticaloil-well 38, cast in the body of the vaporizer. Through this wellextends the downwardly-projecting needlevalve 39, as clearly indicatedin Fig. 2, which tion of the engine.

to retain above the oil-inlet a certain amount of fuel-supply, so that acharge will be supplied under all circumstances to the vaporizer whenthe valve 20 is operated by the suc- This has been found par ticularlydesirable in marine engines for small boats, in which the pitch of thecraft as it passes over a sea frequently disturbs the flow of oil to thevaporizer from the tank located in the bow.

The needle-valve 39 is provided with a ham 'dle 42 and anindicating-pointer 4:3,which latter cooperates with a suitable scaleupon the upper surface of the nut 41.

It is obviousthat the details may be varied by the skill of the mechanicwithout departing from the essentials of the invention.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is-- 1. In a vaporizer for explosive-engines,- thecombination with a vaporizing-passage pro 'vided with air and liquidfuel inlets, of an automatically-operating, suction-valve at the innerend of said passage, an adjustable flange on the stem of said valve, 2.coil-spring intermediate said flange and the valve-casing, and anormally fixed rotatably-adjustable nut for engaging said flange,whereby the throw and suction of saidv valve may be regulated. adiagonal slot 3 1, within which projects a 2. In Vaporizers forexplosive-engines, the

, combination with an inlet-passage comprising downwardly and upwardlyextending elbow position of the nut 29 the throw or extent-1 sectionsarranged at right angles and conper end portion above said disk forcontrolling said oil-inlet. fording a convenient means for regulating 3.In Vaporizers for explosive-engines, the combination with aninlet-passage comprising downwardly and upwardly extending elbowsectionsconnected to each other at their lower ends, an automatically operating'suction-' valve at theinner end of said upwardly-extendingelbow-section, a tangentially arranged oil-inlet at the lower end ofsaid downwardly-extending elbow-section, an auxiliary,downwardly-movable suction-valve at the junction of said-elbow-sectionscomprising a disk portionfor obstructing said passage and a conicalupper end portion for controlling said oil-inlet, the stems of saidvalves being projected through the walls of said vaporizer andadjustable stops for engaging the ends of said valve-stems to regulatethe throw of each of said valves.

4:. In Vaporizers for explosive-engines, the combination with aninlet-passage comprising downwardly and upwardly extending elbowsectionsarranged at right angles and connected to each other at their lowerends, said elbow-sections being cast in piece with a faceplate by whichit is secured in position to the engine-cylinder, a main suction-valveat the inner end of said upwardly-extending elbow arranged above saidoil-inlet, a stuffing-box closing the upper end of said well and aneedlevalve adj ustably threaded through said stufiing-box andextendingthrough said well to regulate said oil-inlet.

CARL H. BLOMSTROM; Witnesses:

ALFRED KIDDER, WILLIAM URICH.

